Improviment in rolling-mills



6 Sheets-#8116911.

G. FRITZ.

Rolling Mills.

Patented nec. 10,1872.

`i Mme/la A Invenord.. v ywwwm@ 15. man. Railing im.

Patented Dec. 10, 1872l lShee'ts--Sheet '6. FRITZ.

-Rolling Mills.

PatentedDec. 10,1872.

Inventry.

-G F H T Z Rolling'Mills.

Patented Dc. 10, 1872.

i encuen" FRITZ, or .Ionnsrown rENNsYLvANmQ l I'MPRGVEIMENT INRommel-MILLS.

Specificationformingpart of Letters Patent No. 133,771, dated December10, 1872.

To all--whom` fit-5 muy; concern:

Be. known. thatl, GEORGE FRITZ, of Johnstowmwinf the coun-tyof Cambriaand State'- of Pennsylvania, e have:r invented certain Improv'ementsv inRollin gv-Millsfor rolling steel andiron in4 ever'yform, of which thefollowing` is-.ia1specicati'ong A Theflrst part of myfinvention relatesto feeding-rollers, driven by friction or otherwise, on'y a movableAtable, which is raised andVv lowered by hydraulicior other power andwhich carries the-.metal to be rolled, said driven rollers feeding themetal into the rolling-mill on one side, taking it out on the other Yside, and drawing it cleary from the mill rolls and guides,and thenreturning it in the same manner, thus passing the metal back and forthasthe tables are elevated and lowered until the process of reduction iscompleted, said feedin g-rollers bein g combined with and moved by=ashaftoperating gear and friction-wheels, which are supported `by andattached to a yoke suspended in suchy manner that vthe frictionwheelsyconnected with it may be brought in contact withor detached from afriction-wheel operating the feed-rollers, by a slight movementofleversinfront and rear of the ma chine;y The second part of myinvent-ion relates to the combination and arrangement of turners andShifters, of inclined or 'other suit-v able form, connected with acarriage running beneath theu movable feed-tables insuch a way that whenthe said tables are lowered the turners and shifters project between andabove the `feed-rollers and turn over or partially over the piece ofmetal being rolled. The said turners Vand Shifters-may also `bemov-edjby'hydraulic or other powerback andl forth betweenthefeed-rollers and placedin any desiredpositionwithy Vreference to thepiece'of metal beingrolled, inl such manner asto adjust it properly forentering'themill-V rolls. The steelpointsiu the vtop of said turn-rersand shifters and ontheir inclined sides, together with such motion asmay becommunicated tothem Vat will'througlrthe piston or other suitable`apparatus for moving the can riage,ietlect'the purposev of turning andadjustingthepiece of metal as-aforesaid.

' Figure 1 is afront elevation of a train of th'reefhigh rolls and iappurtenances.' Fi g.' 2

.shows the end elevation of the same with movable tables atfrcnt andrear.` Fig. 3 isa plan of the same. Fig. 4 is a plan,on an enlargedscale, ofA a part of one table, showing the arrangement for moving thefeed-rollers. Fig. 5 is a side view of a part of one of the tables andits extreme upper and lower positions, with elevations of the gearingand friction-wheels employed to drive the feed-rollers. Fig. 6 isa frontelevation ofthe yoke carrying the gear and friction wheels,A foroperating the feeding-rollers.

The same letters refer to like parts in the drawing.

The housingsK K carry the `mill-rolls L L and L in the usuall manner,and rest on the shoes or bed-plates M. The top and bottom rolls may bemovable vertically in the'honsings, or they may be stationary and themidn die-roll may be movable, or all the rolls'may be. stationary, orall movable, my invention `applying to all these cases. Thefeeding-tables N and N', as shown, are raised and lowered by hydrauliccylinders operatedzby the rods F and F, and are guided by the` armsO andO', and the guides P and P'. The tables may, however, be arranged andvoperated in any other suitable manner. ma are'shafts, driven by meansof the pulleys b b. These shafts may be driven byrany othersuitablemeans, by power derived from the engine that drives themill-rolls, orfrom any suitable line of shafting or engine. The shafts a. a' are`drivenin the direction indicated bythe arms' in Figs. 2 Aand 5,' andupon said shafts are swiveled the yokesgC C. These yokesG C' carry thegeanwheels d d e e, the idler-wheels' f j, and the friction-wheels g g hh, shown in" Figs. l, 2, 5, and 6. The gear-wheels 'i are fast on theshafts a.' a, and by the arrangement of the wheels d ef drive thefriction-wheelsgg71l h in the directions vindicated by the arms in Fig.2. The yokes C C are connected by the rodj with the rock-shafts k l,upon which are o keyed the levers m m. The friction-wheels n n' are faston the shafts o o on the feed-tables, upon which shafts are alsofastened thefeedfrollers p p and the gear-wheels qq. The other rollers,r 1^ r, on the feed-tables, are fast on the shafts s s s, as are alsothe gear-wheels tt t, and all of these geanwheels are connected withveach other as well as with the gear-wheels q q, by the idler-wheels u uu, in such manner that when the shafts o o are revolved inany'direction, all the rollers on the feed-tables will revolve in thesame direction. This revolution is ei'ected by throwing thefriction-wheels n n in contact with the friction-wheels attaehed to theyokes C C, which may be done by moving the levers on m on either side ofthe train. The feed-rollers r M' are mounted, as before explained, onmovable tables, (see Figs. 2 and 3,) which lift and let down alternatelythe piece of metal to be rolled, from the position indicated by theYline 'v r in Fig. 2 (said line corresponding to the lower passes) tothe position where the tables are represented in Fig. 2, correspondingwith `the upper passes. The upper and lower positions of the table arealso shown by Fig. 5.

The above-described arrangement rendersit easy, by-moving one of thelevers on either .side of the train, to feed the piece of metal on thetable into the rolls, and to withdraw it far enough from the rolls tolet the tables go up and down without hindrance. lw w are platesfastened in front of the rollers to protect them from injury by thepiece of metal when it is leaving the rolls.

The operation is as follows: The ingot or piece of metal to be rolledhaving been placed on the feed-rollers p 1 1 d' on the front table N',the table being in its lowest position, (see Figs. 5 and 2,) and thefeed-rollers not being in motion, the workman moves the lever m in suchmanner that the constantly-moving lower friction-wheel l1l comes incontact with the friction-wheel n, thus starting the friction-wheel nand all the feed-rollers connected with it. The feed-rollers thusv carrythe piece of metal between the lower and middle mill-rolls L L, by whichit is rolled and c arried through'to the back ytable N, which is also inits lowestposition. The feed-rollers on the table N are then set inmotion in the same direction by means of the lever m, and carry thepiece of metal toits proper position on the table N. The workmanthenmoves the lever m into a central position, and so stops thefeed-rollers. The tables N and N are then raised to the upper position,shown in Fig. 2. The workman then moves the leverm in such manner as' tobring the constantly-moving upper friction-wheel g into contact with thefriction-wheel n, thus starting 'the feed-rollers onv the table N in thekopposite direction to that in which they previously moved, therebycarrying the piece of metal between the upper and middlemill- `'rolls Land L.v This operation is repeated fas often as desired.

.'ln some cases it may notbe necessary to Y operate the feed-rollers bypower when they receive the piece of metal from the mill-rolls, 1- butonly to operate them by power when they l)carry the piece of metal intothe mill-rolls. In such cases the speed of the mill-rolls should besuiicient to throw the piece of met .'al out so far that the table canbe raised without hindrance. The motionof the'feed-rollers need not insuchA cases be reversed by moving theQ lever fm.; but they may be drivenonly at the. time and in the direction necessary to feed Ithe piecetoward. the mill-rolls.

It will be observed that the combination of the movable table with thedriven rollers is found. in my invention, whether said driven rolllersare reversed or driven in one direction on y.

The arrangement for turning and shifting the piece to be rolled is asfollows: A A A,

Figs. 1 and 3, are one or more pieces of metal,

turners and Shifters may alsobe used without these steel points.

The operation is as follows: When the piece of metal needs tovbe shiftedor turned laterally the turners and Shifters are run into such aposition under the-table (the table then being in its upperpositionlthat when the table is let down the steel points D D D engagethe piece, causing it to turnover, which being done the piece glidesAdown the turners and shifters until ,itr fallsY on the table where itis wanted, or, by moving the carriage, the piece is moved laterally intoits proper positionrto: be yfed into the rolls again. Theturnersandshifters are then/withdrawn and the feed-rollers again set inmotion, as aforesaid. Y

. In some cases I prefer to place and operate the turners and Shiftersabove instead of nnder the movable table. y

Claims.

. What I claim, and desire to secure by LetterslPa-tent, is

1. The combination, vin a rollingmill for rolling steel and iron, ofmovable tables for supporting and carryin g the piece to be operatedupon, with driven feed-rollers in said movable tables, whether saidldriven feed-rollers are reversible or non-reversible, substantially asset forth.4

2. The combination of rods j j and levers m m with the yokes c c, insuch manner that the driven feed-rollers in the movable tables may beset in motion by means of either of the levers m m,'thus enabling menenopposite sldes of the train to start the driven feed-rollers 1n motionor to assist each other.

3. The arrangement and combination of the y yoke' and the gear-wheelsand friction-Wheels supported by the yoke, substantially as setv forth.y y 4. The combination of one or-more upright turners and Shifters witha movable table or tables, and operated by hydraulic or otherl power,substantially as set forth.

5. I claim the arrangement and combination, in a rolling-mill, of theyokes With their attachments, the movable tables containing drivenrollers with their attachments, and the turners and. shifters with theirattachments, substantially as set fort r GEORGE FRITZ.

.Witnesscsz t ISAAC E. CHANDLER,

GYRUs ELDER,

A. MONTGOMERY.

